Hydraulic Arm Repair..

admin

Hey Guys.. whats up?Had a repair job to do for Dad today..the "eye" holes where the pin goes thru were "eggshaped"he said only one hole needed attention..ummmm sorry both holes are out..just rewelding up the holes and re-boring them is not the thing to do..the weld area gets extreamly hard afterwards and its no fun when you keep snapping carbide boring bars.. so heres what we do..First we clamp it in a Bridgeport...get the holes in line and bore the holes out 1/4"(gives you a 1/8" wall for the bushing size)now that thats done you fab up some new steel bushings in a lathe and insert into the holes..notice how there is a raised surface and a "lower" surface...here it is after welding..3/32 tungestion..smallest cup size you have..100 amps...045 filler wire..ane when thats done now its time for the "reamer"..(1 3/4" dia.)and there we have it!pin fits just like it was made for it! giving credit where credit is due..BIG thanks to member wog820 for his assistance in this repair..(all i did was weld in the bushings and ream it out)...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:I wish we could get jobs like this one everyday Nice quick repairs like this can fill your pockets fast Thanks for getting me involved, anything for dear daddy o'
Reply:...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Hey zap at the mine we have a bore tech neat little booger check out the link.http://www.bortech.com/default.aspLast edited by Dipper Welder64; 12-07-2006 at 08:51 PM.
Reply:the link crashed my computer.. i dont blame you......zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Wow, that’s a slick repair.How did you feed and turn that reamer?
Reply:try this one zap.www.bortech.com
Reply:Originally Posted by denrepWow, that’s a slick repair.How did you feed and turn that reamer?
Reply:Originally Posted by Dipper Welder64try this one zap.www.bortech.com
Reply:hey this is great, thanks for that aye zapster... just curious, what was the hydraulic-arm made out of?"One World...One Muay Thai...Muay Thai Never Dies..."
Reply:Locally pin bore rebuilds are all going to orbital welding.  The time saved on the boring is considerable since the buildup is accurate all the way around and so machining time is limited to a cleaning cut.  The welding setup initial cost is considerable however.
Reply:Originally Posted by Weazyhey this is great, thanks for that aye zapster... just curious, what was the hydraulic-arm made out of?
Reply:Originally Posted by Dipper Welder64Hey zap at the mine we have a bore tech neat little booger check out the link.http://www.bortech.com/default.asp
Reply:wait til ya see the price wow!
Reply:Originally Posted by Dipper Welder64wait til ya see the price wow!
Reply:Tell him if He buys one to cherish the control box they don't hold up well and use a rubber mat to set it on and one more shield it from splatter.
Reply:Originally Posted by Dipper Welder64Tell him if He buys one to cherish the control box they don't hold up well and use a rubber mat to set it on and one more shield it from splatter.
Reply:All I know is weve sent 2 boxes in for repair because they won't function correctly. Personally I have ran the bore tech with no problems.
Reply:Saw this cool portable inline rotary bore repair system and several other neat machines being demo'd one week ago at a local AWS meeting. http://www.borerepair.com Uses a rotary MIG head. Looks like ~ $15K for the setup.
Reply:...zap![/QUOTE]just rewelding up the holes and re-boring them is not the thing to do..the weld area gets extreamly hard afterwards and its no fun when you keep snapping carbide boring bars....zap![/QUOTE]Whoa whoa whoa...a little bit slower in here...Ain´t that what you do in your shop everyday? and carbide holds? kinda confused now My Babies: HF Drill pressHF Pipe Bender3   4.5" Black and Decker angle grindersLincoln Electric PROMIG 175that´s it!
Reply:Originally Posted by elvergon..zap![/QUOTEWhoa whoa whoa...a little bit slower in here...Ain´t that what you do in your shop everyday? and carbide holds? kinda confused now
Reply:Originally Posted by denrepWhoa whoa whoa...a little bit slower in here...Ain´t that what you do in your shop everyday? and carbide holds? kinda confused now
Reply:Originally Posted by elvergon...zap!
Reply:Maybe you should try using just a high speed cutter and not a carbide.... I have personally found the HS to work better. I have done a lot of bore repairs on a lot of different equipment.... heres are a few pics of a linkbelt that had damage to one of the heel ears.....http://i147.photobucket.com/albums/r...linkbelt01.jpghttp://i147.photobucket.com/albums/r...linkbelt02.jpghttp://i147.photobucket.com/albums/r...linkbelt05.jpghttp://i147.photobucket.com/albums/r...linkbelt08.jpghttp://i147.photobucket.com/albums/r...linkbelt11.jpgChris
Reply:Oh I know we could buy a foundry and forge out a new cylinder mount. But for an economical practical fast repair it would be hard to beat zap’s job.Myself, in the real world, even if I had automated bore repair equipment, I’m not sure I would have set it up for this job. It was nice not to put super heat  into the cylinder barrel. Don't forget the upcoming air bumper test!Originally Posted by denrepBut for an economical practical fast repair it would be hard to beat zap’s job.Myself, in the real world, even if I had automated bore repair equipment, I’m not sure I would have set it up for this job. It was nice not to put super heat  into the cylinder barrel. Don't forget the upcoming air bumper test!
Reply:Fella's the only time when machining after using a boretech that you hit a hard spot is when there is more then 1 plate. Grease and oil will get trapped and as we all know will create hard spots. as for bushing's we use a press fit but instead of pressing we heat the bosses and cool the bushing's using liquid nitrogen. and the bushing's I'm talking about are anywhere from 4 inch to 10 inch. As stated in previous posts this is a efficient way to go.